body {
    margin: 0 300px;
    font-size: 16px;
    font-family: "微软雅黑";
    line-height: 25px;
    background: #7EC4CC;
}
.top{
    height: 50px;
    line-height: 10px;
    background: whitesmoke;
    font-size: 12px;
}
.top h1{
    text-align:left;
}
.top p{
    text-align:right;
    margin: 20px 10px 20px 10px;
}
.web{
    font-weight:bold; /*文字粗体*/
    font-style: italic;
}
.main h1 {
    width: 24%;
    height: 250px;
    position: relative;
    float:left;
    text-align:center;
    line-height: 250px;
}
.main img{
    width: 24%;
    position: relative;
    float:left;
    margin: 20px 5px;
    border: 0;
    border-top: 1px solid #d0d0d5;
    border-left: 1px solid #d0d0d5;
    border-right: 1px solid #d0d0d5;
    border-bottom:1px solid #d0d0d5;
}
.main p{
    width: 24%;
    position: relative;
    float:right;
    margin: 10px 5px;
    text-align:center;
    color: #000000;
}

